| 摘要 |
1:4-Di-[p-(b -hydroxyethoxyethoxyethoxy) phenyl] amino-5 : 8-dihydoxy anthraquinone is prepared by refluxing leuco 1 : 4 : 5 : 8-tetrahydroxyanthraquinone with p-aminophenyl-b -hydroxy-b -ethoxy-b -ethoxy-ethyl ether in the presence of aqueous sodium carbonate or bicarbonate, and pouring the reaction mixture into hydrochloric acid. Specifications 310,784 [Class 2(iii)] and 593,955 are referred to in this connection. 1 : 5-Di-[p-(b -hydroxyethoxyethoxyethoxy) phenyl] amino-4 : 8-dihydroxyanthraquinone is prepared by condensing 1 : 5 - dichloro - 4 : 8 - dihydroxyanthraquinone with p-(b -hydroxyethoxyethoxyethoxy) aniline. 1-Amino - 6 - (6 - ethylsulphonamido - 2 : 4 - dinitro phenyl azo)-5-naphthol is prepared by coupling diazotized 1-amino-2 : 4-dinitrobenzene - 6 - sulphomethyl amide with 5 amino-1-naphthol (see Example 1 of Specification 548,903). 4-Nitro-4/sv-[di(hydroxyethyl) amino]-benzene azo benzene is prepared by coupling diazotized p-nitro aniline with di(hydroxyethyl) aniline as described in U.S.A. Specification 1,673,301. 4 - nitro - 2/sv - methyl-4/sv-[di(hydroxyethyl) amino]-benzene azo benzene and 3 : 4 : 5-trichloro-4/sv-[di(hydroxyethyl) amino]-benzene azo benzene may be prepared in an analogous manner. Specifications 640,730 and 640,731, [both in Group IV(a)], also are referred to. |
